Update mockserver from 5.6.1 to 5.13.0

Change-Id: Iceb60d685e8b67443921f571862813909f1b811c
diff --git a/pom.xml b/pom.xml
index 2017c4f..1d2dbc3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -86,7 +86,7 @@
     <dependency>
       <groupId>org.mock-server</groupId>
       <artifactId>mockserver-netty</artifactId>
-      <version>5.6.1</version>
+      <version>5.13.0</version>
       <scope>test</scope>
     </dependency>